CN1954746A

CN1954746A - Pressure cooker

Info

Publication number: CN1954746A
Application number: CNA2006101428515A
Authority: CN
Inventors: W·奥韦特尔; M·胡贝尔
Original assignee: Kuhn Rikon AG
Current assignee: Kuhn Rikon AG
Priority date: 2005-10-28
Filing date: 2006-10-27
Publication date: 2007-05-02
Anticipated expiration: 2026-10-27
Also published as: ES2302164T3; ATE388655T1; EP1779753B1; US20070095836A1; EP1779753A1; US7762420B2; CN1954746B; JP2007125381A; DE502005003231D1

Abstract

The pressure cooker has a pot(2) with a base and a side wall and an upper rim(6). A lid can be connected to the pot(2) in a sealed manner along the abovementioned upper rim(6). In the presence of a predetermined positive pressure, a locking device(12) connects the lid(3) to the pot in a non-releasable manner in conjunction with a pressure element(11) arranged on the lid(3). The locking device(12), in a fitting(5) of the lid(3), has a rocker(12a) which is mounted in a movable manner and, for control purposes and in order to lock the lid(3), interacts with the pot(2) and the abovementioned pressure element(11). Locking takes place automatically when the pressure cooker is closed and the locking means can be produced in a reliable and cost-effective manner.

Description

Pressure cooker

Technical field

The present invention relates to pressure cooker, described pressure cooker has a pot body, have lid and locking device simultaneously, above-mentioned pot body has the bottom of a pan and sidewall and upper edge, above-mentioned lid can be connected on pot body with sealing means along above-mentioned upper edge, and above-mentioned locking device combines with being installed in the pressure elements that covers when malleation is scheduled in existence, with the mode that can not get loose lid is connected on pot body.

Background technology

Such pressure cooker is known to be had for a long time.The pressure cooker pressure inside can be by increasing at the bottom of the heating kettle, so that quicken digestion process.Lid normally is connected on pot body by bayonet socket.Lid can get loose from the pot body by pivoting.Locking device prevents the situation that exists lower cover to rotate and therefore get loose in sizable malleation from the pot body.Prior art discloses many such locking devices.These locking devices are covering a pressure elements, and described pressure elements for example has short column or the pin that stretches out in the presence of malleation, and described short column or pin and a movable catch member are used to lock purpose.

The pressure cooker of the above-mentioned type is for example open in EP0123197A.This pressure cooker has the locking closure in the lid handle, described locking closure is designed to the closure that is clasped.The locking closure is used for preventing that lid from by mistake rotating with respect to the pot body.Here covering handle is connected to the mode that can get loose and covers.

DE2705712A discloses the tight and mechanism of decompressor of cover lock on the steam pressure cooker.Locking takes place by protuberance, and described protuberance can pass through the starting button displacement for the purpose of unblanking, and above-mentioned starting button stretches out on the top side of lid handle.During unblanking, open the valve and the pressure that dissipates simultaneously.

DE20318647U relates to (steam) pressure cooker.Described (steam) pressure cooker has two retaining mechanisms, this means to produce to comprise higher cost.

Summary of the invention

The pressure cooker that the purpose of this invention is to provide the above-mentioned type, described pressure cooker with simpler and cheaply retaining mechanism be characteristic.However, the meaning horse stable is to make the retaining mechanism reliable in function and simple to operate.

Under universal pressure cooker situation, above-mentioned purpose realizes that in the following manner locking device has rocking arm in the accessory of lid, and described rocking arm is installed with manner, and for for the purpose of controlling and for tightening cover, above-mentioned rocking arm interacts with pot body and above-mentioned pressure elements.This retaining mechanism can be designed to only have few parts and design with very space-saving mode.Rocking arm can be put into and for example cover handle, and the lid handle can be narrow design.Locking is as the automatic generation of unblanking.Therefore for the retaining mechanism that gets loose, manipulation both can not also there is no need.

According to result of study of the present invention, provide when swivelling cover, rocking arm is by the profile control at above-mentioned edge.This has sizable advantage, does not promptly need any additional parts and controls rocking arm.

According to result of study of the present invention, provide profile and form by at least one bayonet socket.When according to research of the present invention, for the purpose of tightening cover, when the edge had with the interactional groove of rocking arm, rammed structure or extension, cost was low especially.These grooves and punching structure can be produced in a large number with very low cost.Especially, when groove or punching structure or extension were arranged on the bayonet socket, situation just like this.

According to result of study of the present invention, what rocking arm was installed in accessory is in the groove of hiding basically.Especially from aesthetic standard, this is favourable.In addition, protect rocking arm to avoid damaging thus.

When according to result of study of the present invention, rocking arm has an axle, and described rocking arm is installed in the accessory like this by axle, so that it can be pivoted to limited extent the time, has guaranteed the simple and firm installation of rocking arm.

When according to result of study of the present invention, rocking arm have arm-described arm in locked position in the movable part of pressure elements by stop locking (stop-blocked)-time, the retaining mechanism function is especially reliable.Movable part is for example short column or pin, and when having malleation in pressure cooker, above-mentioned short column or pin stretch out on the top side of lid.

According to result of study of the present invention, provide rocking arm and have fingers, described fingers is for for the purpose of swivelling cover time control rocking arm, along the circus of pot body.Simple especially locking device structure is provided like this.Especially work as according to achievement in research of the present invention, in locked position, when fingers and bayonet joint, situation just like this.The present invention especially provides the configuration of symmetry, can for example be connected on pot body in two or three diverse locations with toilet cover.For example, two or three bayonet sockets be installed and be provided with to retaining mechanism can symmetry.Obvious advantage of the present invention in fact also can see, pressure cooker promptly of the present invention and conventional pressure cooker are almost without any different.Especially, a pot body is produced like this so that it with without any pot body of retaining mechanism basically almost without any different.

When rocking arm is made into to be parts on the whole, reaches especially cheaply and produce.Yet rocking arm also can be made with many parts, and described many parts interconnect with articulated manner.

According to result of study of the present invention, rocking arm designs like this, and when not exclusively sealing with the box lunch lid, it makes the sealing ring distortion that is installed in the lid, therefore can not produce any pressure in pressure cooker.

Description of drawings

Be described in more detail exemplary embodiment of the present invention with reference to the accompanying drawings, wherein:

Fig. 1 illustrates the 3-D view that has shed lid according to pressure cooker of the present invention;

Fig. 2 illustrates according to pressure cooker side view of the present invention;

Fig. 3 illustrates the other view according to pressure cooker of the present invention, and in this case, owing to illustrating reason, lid also sheds;

Fig. 4 illustrates the 3-D view of rocking arm;

Fig. 5 illustrates the 3-D view of bayonet socket;

Fig. 6 illustrates the plane that pot body has bayonet socket variant scheme;

Fig. 7 illustrates the lid handle view that rocking arm wherein is installed, and rocking arm dots;

Fig. 8 illustrates the plane according to pressure cooker of the present invention, and lid illustrates and is in lockset position of coupler;

Fig. 9 illustrates the cutaway view that passes pressure elements;

Figure 10 a illustrates the described pressure elements according to Fig. 9, but is in locked position of coupler;

Figure 10 b illustrates pressure elements and is in the overload position, and when wherein having malleation in pressure cooker, steam is emitted;

Figure 11 illustrates the schematic diagram of pressure cooker variant scheme, owing to illustrational reason, each parts is omitted;

Figure 12 illustrates the plane according to pressure cooker shown in Figure 11;

Figure 13 illustrates another view according to pressure cooker shown in Figure 11;

Figure 14 illustrates another view according to pressure cooker shown in Figure 11, and wherein pressure cooker is locked;

Figure 15 illustrates the cutaway view of the variant scheme of passing pressure elements; With

Figure 16 illustrates the cutaway view that passes the pressure elements that is in locked position of coupler.

The specific embodiment

Pressure cooker 1 is shown in Figure 2, and described pressure cooker 1 has pot body 2 and covers 3 in addition by in fact conventional mode, and above-mentioned pot body 2 utilizes above-mentioned lid 3 pot body 2 to be sealed with sealing means at open-top.Pot body 2 is equipped accessory in a known manner, especially equips panhandle 4, in this case panhandle is designed to elongated handle.Yet also available certain alternate manner mode as known per se designs panhandle.Lid 3 has accessory equally, especially covers handle 5, and described lid handle 5 is elongated handle equally, and when pressure cooker 1 sealing, lid handle 5 is positioned at the top of panhandle 4.

Lid handle 5 is fixed to like this and covers on 3, especially is screwed to screw thread and covers on 3.In order to seal pressure cooker 1, will cover 3 and be positioned on pot body 2, and, be positioned at panhandle 4 tops until lid handle 5 with respect to 2 rotations of pot body.

Fig. 2 illustrates and covers 3 and be shown in an open position, and therefore covers handle 5 with respect to panhandle 4 rotations.

Pot body 2 and the connection of covering between 3 are bayonet couplings, and a plurality of bayonet sockets 7 and 8 are arranged on pot body 2 according to Fig. 1, and correspondingly, some bayonet sockets are arranged in equally in a known manner and cover on 3.Fig. 8 illustrates and covers 3 and be in the position of can be from pot body 2 its being taken out.Pressure cooker 1 rotates to toward the clockwise direction and covers handle 5 and be positioned at panhandle 4 tops sealings by covering 3.For the purpose of opening, will cover 3 towards the same angle of counter rotation.

Be arranged in that to cover on 3 be pressure elements 11, described pressure elements 11 has a removable pin 13, and is safety element simultaneously, and safety element is in the position shown in Figure 10 b and bleeds off steam in the presence of predetermined malleation.According to Fig. 9 and 10, this removable pin 13 is installed like this, so that it can be moved in the bore hole 31 and groove 30 of director element 10b.Pressure elements 11 has cover tubular and a flexible shell 29, and described shell 29 has a groove 34, engages the periphery of the bore hole of lid in described groove 34, so pressure elements 11 is securely fixed in and covers on 3.33 protections of groove 30 usefulness screen clothes are in case the inside of pressure cooker 1 tarnishes.Film 33 is flexible.If do not have significant malleation in the inside of pressure cooker 1, then removable pin 13 is positioned at position shown in Figure 9.If there is pressure to increase in the inside of pressure cooker 1, then removable pin 13 rises, and is last, reaches the front end of the outside of shell 29 as it, as shown in Figure 10 a.If the internal pressure at pressure cooker 1 further increases, then last removable pin 13 moves in the position shown in Figure 10 b, and pressure is dissipated.

Like this, pressure elements 11 forms safety valve simultaneously, and described safety valve prevents to form the pressure that can not allow in pressure cooker 1.

Pressure elements 11 interacts with locking device 12.This locking device 12 and pressure elements 11 are used for preventing just in case cover 3 possibilities of opening when pressure cooker 1 internal positive pressure exists.Therefore be used for reaching 3 situations about when malleation exists, can not rotate of covering.

There is smaller malleation, for example 0.04 or 0.05 when crust, also can preventing from reliably to open.Locking is automatically to take place, so as to guarantee when pressure cooker 1 sealing and malleation when being main eliminating open.

Locking device 12 has a rocking arm 12a, and preferably, described rocking arm 12a is whole parts, and made of plastic, but must be not so.According to Fig. 7, rocking arm 12a is installed in the groove 26 that covers handle 5 in the mode that rotor rotates.For the purpose of installing, rocking arm 12a has an axle 14 according to Fig. 4, and described axle 14 has two axle journals 15, and these two axle journals 15 are bonded in the respective openings (not shown here) of groove 26 inside of covering handle 5.What be arranged in groove 26 centroid axles 14 a distance is spring element 27, especially coil spring, and above-mentioned spring element 27 is connected on the rocking arm 12 at protuberance 18 places.Spring element 27 also can act on any position of rocking arm 12a, and is designed to for example sheet spring.

Protuberance 18 is positioned on the arm 16, and described arm 16 stretches out from axle 14 diametrically, and in distance protuberance 18 a distance one groove 17 is arranged, and described groove 17 interacts with removable pin 13 in according to the locked position of Fig. 1.Arm 16 is fixed on the axle 14 by cross 20.Rocking arm 12a can make with plastics or suitable metal.

What be parallel to arm 16 extensions is wall 21, the whole fingers 22 that forms on described wall 21.This fingers 22 interacts with the edge 6 of pot body 2, especially interacts with bayonet socket 7.Isolated with fingers 22 is protuberance 19, and just as can be seen, described protuberance 19 is thicker slightly than wall 21.Wall 21 is installed like this, so that it can rotate to limited degree by 19 pivots of the protuberance in the groove 26.Protuberance 19 is used to control rocking arm 12a, and locatees like this, makes its 6 slip along the edge during with 3 rotations of box lunch lid.As long as cover 3 not exclusively sealings, protuberance 19 just acts on and is installed on the conventional sealing ring (not shown herein) that covers in 3, and makes the sealing ring distortion, so that can not form any pressure in pressure cooker.This has guaranteed further security function.

About bayonet socket shown in Figure 37, protuberance 19 is arranged like this, so that under the situation of lid 3 according to Fig. 8 location, protuberance 19 is positioned at the front of bayonet socket 7, as shown in Figure 3.Rotate toward the clockwise direction from position shown in Figure 8 as operculum 3, then protuberance 19 moves on the bayonet socket 7, and slides along described bayonet socket 7.Protuberance 19 passes through bayonet socket 7 towards radial direction deflection, and correspondingly, rocking arm 12a is around axle 14 rotations.Simultaneously, by this rotatablely move be pivoted to accurate like this so that it directly upwards moves inward.Like this, protuberance 19 outwards moves, and fingers 22 moves inward.Be in detent position as operculum 3, then protuberance 19 is close to the outside of bayonet socket 7, and fingers 22 is bonded in the zone of bayonet socket 7 according to Fig. 1.If in pressure cooker, there is not malleation, then cover 3 and can rotate to position shown in Figure 8 once more, and pressure cooker 1 opened once more.Here rocking arm 12a correspondingly moves in the opposite direction around axle 14.This bias spring 27 that moves through helps.If the internal positive pressure at pressure cooker 1 is main, then this motion in the opposite direction no longer includes possibility.In the presence of malleation, removable pin 13 is so accurately to stretch out on the top side of lid according to Fig. 1, so that it is located immediately at the front of groove 17, as shown in Figure 1.Rocking arm 12a no longer can pivot like this, is provided with because arm 16 heads on the removable pin 13 that stretches out by groove 17.

As mentioned above, in above-mentioned position according to Fig. 1, fingers 22 is bonded in bayonet socket 7 zones.According to Fig. 1, bayonet socket 7 is equipped with punching structure 7a, and described punching structure 7a is out of shape bayonet socket 7 like this, so that bayonet socket 7 is overhead in the zone of punching structure.This punching structure 7a forms the retainer of fingers 22, and prevents to cover 3 openable situations.

Without punching structure 7a, also can be for example according to Fig. 5 with the removable pin 23 that protrudes upward or protuberance or analog be arranged in bayonet socket 7 ' on.Cover 3 if attempt to open, then fingers 22 itself correspondingly heads on removable pin 23.As alternative plan, according to Fig. 6, lid 2 ' can also have the bayonet socket 7 of band groove 24 ".In locked position, fingers 22 is bonded in this groove 24 then, therefore no longer can open and cover 3.As shown in Figure 6, preferably at least two bayonet sockets of locating toward each other are equipped with this groove 24.Lid 3 correspondingly can be placed in pot body 2 ' last two positions.The bayonet socket 7 that symmetry is arranged more than two " also is feasible in principle.Lid 3 for example optionally can be placed in 3 positions then.Be locked in all 3 positions and take place, as mentioned above.Certainly, this also be applicable to bayonet socket 7 and 7 '.

If in case locking is finished, pressure cooker 1 has cooled off, and most of malleation that dissipates, for example pressure is lower than 0.04 or 0.05 crust, and then removable pin 13 is arranged in position shown in Figure 9 once more.Covering 3 then can be easy to rotate in the position shown in Figure 8.Rocking arm 12a can pivot herein, pivots around axle 14 because removable pin 13 no longer prevents rocking arm 12a.The pivoting action of rocking arm 12a outwards moves fingers 22 apace, and therefore with punching structure 7a or sell 23 and separate, perhaps shifts out groove 24.Because there is not malleation to exist in the inside of pressure cooker 1, thus this motion, or to open pressure cooker 1 be safe.

Figure 11-16 illustrates locking device 35, and described locking device 35 is installed in the corresponding recesses of panhandle 4 equally.Locking device 35 has an axle 47, by the pivotable mode of described axle 47 usefulness locking device 35 is installed in the groove.Axle 47 for example is connected on fingers 49 and the arm 48 according to Figure 12, so that it can pivot by lever 46.Lever 46 engages with pin 44, and described pin 44 tightly suppresses edge 6 owing to the biasing of spring element 45 as front end according to Figure 12.The pivotable mode of pin 44 usefulness is connected on the lever 46.Fingers 49 is corresponding with fingers 22 in function aspects, and lever 46 is corresponding with arm 16 in function aspects.The removable mode of pin 44 usefulness is installed in the panhandle 4, and spring 45 is bearing on the panhandle 4 simultaneously.

Locking device 35 and pressure elements 11 ' interactions, described pressure elements designs according to Figure 15 and 16, and unlike pressure elements 11, any security function of pressure elements 11 ' do not implement.As from these figure as can be seen, pressure elements 11 ' have cannula-like main body 39, described main body 39 usefulness tack and movably form be installed in and cover in 3 the opening 38.Sealing ring 42 is installed in and covers between 3 the inboard 43 and collar (collar) 41.Reinforcement 40 is spaced apart with collar 41, and with pressure elements 11 ' be fixed on and cover in 3.When in pressure cooker 1, having malleation, in pressure elements 11 ' immigration position shown in Figure 16, wherein just as can be seen, pressure elements 11 ' on the top side of lid 3, stretch out.Yet, set in this embodiment pressure elements 11 ' also can replace with the pressure elements shown in Fig. 9 and 10 11.

Figure 11 and 12 illustrates locking device 35 and is unlocked, and therefore covering 3 can be rotated.Pressure elements 11 ' be positioned at position shown in Figure 15.

Figure 13 and 14 illustrates locking state.Lid 3 is positioned at detent position, and pressure elements 11 ' be positioned at position shown in Figure 16, and wherein main body 39 protrudes upward.Pin 44 is with spring 45 reverse bias and tightly suppress bayonet socket 36.Bayonet socket 36 is forced to make pin 44 enter following position, will sell 44 and be arranged to than not locked position shown in Figure 12 further outside in the radial direction in this position.Because the position of lever 46, fingers 49 further inwardly is being arranged in position shown in Figure 14 in the radial direction.If attempting then to open covers 3, then arm 48 and the pressure elements 11 that stretches out ' engage.Fingers 49 just can not rotate in the position shown in Figure 12 like this.It still is in position shown in Figure 14 basically, and finally tightly suppresses the convex shoulder 37 of bayonet socket 36.Lid 3 can not be done any further rotation like this, perhaps opens subsequently.

As can be seen, bayonet socket 36 has the form of shortening.Yet the embodiment that fingers 49 heads on the convex shoulder setting of the bayonet socket that does not shorten also is imaginabale.Therefore, under this embodiment situation, can use the pot of routine up to now.

The label detail list

1 pressure cooker, 34 grooves

2 pots of body 37 convex shoulders

3 lids, 38 openings

4 panhandles, 39 main bodys

5 lid handles, 40 reinforcements

6 edges, 42 sealing rings

7,8,36 bayonet sockets, 43 inboards

9,21 walls, 46 levers

10 outsides

11 pressure elements

12,35 locking devices

The 12a rocking arm

13,23,44 pins

14,47 axles

15 axle journals

16,48 arms

17,24,26,30 grooves

18,19 protuberances

20 crosses

22,49 fingers

25 punching structures

27,45 spring elements

28 handles

29 shells

31 bore holes

32,41 collars

33 screen clothes

Claims

1. pressure cooker, described pressure cooker has a pot body (2), have lid (3) and locking device (12) simultaneously, above-mentioned pot body (2) has the bottom of a pan and sidewall and upper edge (6), above-mentioned lid (3) can be connected on pot body (2) along above-mentioned upper edge (6) with sealing means, and above-mentioned locking device (12) when predetermined malleation exists be arranged on lid (3) on pressure elements (11) combine and will cover (3) in the mode that can not get loose and be connected on pot body (2), wherein locking device (12) has rocking arm (12a) in the accessory (5) of lid (3), described rocking arm is installed in the mode of activity, and for for the purpose of the control and for tightening cover (3), with the interaction of pot body (2) and above-mentioned pressure elements (11).

2. pressure cooker as claimed in claim 1, wherein, when the lid rotation, rocking arm is by the profile control at above-mentioned edge.

3. pressure cooker as claimed in claim 2, wherein, above-mentioned profile is formed by at least one bayonet socket.

4. as claim 2 or 3 described pressure cookers, wherein, for the purpose of tightening cover, above-mentioned edge has and the interactional groove of rocking arm, punching structure or extension.

5. pressure cooker as claimed in claim 4, wherein, groove, punching structure or extension are arranged on the bayonet socket.

6. as one of them described pressure cooker of claim 1-5, wherein, rocking arm is installed in the groove that the quilt of accessory hides basically.

7. as one of them described pressure cooker of claim 1-6, wherein, rocking arm has axle, and rocking arm is installed on the accessory by axle, so that it can pivot in limited scope.

8. as one of them described pressure cooker of claim 1-7, wherein, rocking arm has an arm, and described arm is when locked position, and the movable part by pressure elements is braked locking.

9. as one of them described pressure cooker of claim 1-8, wherein, rocking arm has fingers, and described fingers is for for the purpose of swivelling cover time control rocking arm, along the circus of pot body.

10. pressure cooker as claimed in claim 9, wherein, when locked position, fingers and bayonet joint.

11. pressure cooker as claimed in claim 10, wherein, bayonet socket has groove, punching structure or extension, and fingers engages with above-mentioned groove, punching structure or extension when locked position.

12. as one of them described pressure cooker of claim 1-11, wherein, rocking arm integral body is parts.

13. as one of them described pressure cooker of claim 1-12, wherein, the bayonet socket that the edge of pot body has two or more symmetric arrangement, described bayonet socket can interact with locking device.

14. as one of them described pressure cooker of claim 1-13, wherein, sealing ring is installed in the inside of lid, as operculum be not in detent position then rocking arm make sealing circle distortion, and can not form any pressure in that pressure cooker is inner.